Journal
MATERIALS RESEARCH BULLETIN
Volume 135, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2020.111134
Keywords
Zn ion hybrid supercapacitors; Porous carbon; Pitch; Molten salt
Categories
Funding
- National Natural Science Foundation of China [U1810110, 21822509, 22005222]
- Science and Technology Planning Project of Guangdong Province [2018A050506028]
- Jiangmen basic and theoretical scientific research science and technology plan project [2019JC01009, 2020JC01033]
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Porous carbon synthesized via molten salt method was developed as a high performance cathode for Zn ion hybrid supercapacitors, resulting in increased energy density and cycling stability of the fabricated devices.
Zn ion hybrid supercapacitors (ZHSCs) are one of the most promising energy storage devices due to its combination of supercapacitor and battery type electrodes. However, the energy density of ZHSCs are still unsatisfying. In this work, we develop porous carbon via molten salt method as high performance ZHSCs cathode. The as obtained porous carbon shows high specific area as well as abundant mesopores. Consequently, the as fabricated ZHSCs exhibit a high energy density of 36.5 W h kg(-1) obtaining at the power density of 376.6 W kg(-1) as well as good cycling stability (85.4 % capacitance retention after 10000 cycles).
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